Diamond



FIG. 1 is a side elevational view of the diamond, showing my new design;

FIG. 2 is a pavilion view which is a bottom plan view;

FIG. 3 is a crown view which is a top view; and,

FIG. 4 is a crown view showing the facet pattern over the girdle when viewed from the top. 

The ornamental design for diamond, as shown and described. 